Add d/q; make query minimally schema aware.

src/datomish/db.cljc

@@ -144,13 +144,35 @@
           ]
       rowid)))
 
+
+(defn datoms-attribute-transform
+  [db x]
+  {:pre [(db? db)]}
+  (entid db x))
+
+(defn datoms-constant-transform
+  [db x]
+  {:pre [(db? db)]}
+  (sqlite-schema/->SQLite x))
+
+(defn datoms-source [db]
+  (source/map->DatomsSource
+    {:table :datoms
+     :fulltext-table :fulltext_values
+     :fulltext-view :all_datoms
+     :columns [:e :a :v :tx :added]
+     :attribute-transform (partial datoms-attribute-transform db)
+     :constant-transform (partial datoms-constant-transform db)
+     :table-alias source/gensym-table-alias
+     :make-constraints nil}))
+
 (defrecord DB [sqlite-connection schema entids ident-map current-tx]
   ;; ident-map maps between keyword idents and integer entids.  The set of idents and entids is
   ;; disjoint, so we represent both directions of the mapping in the same map for simplicity.  Also
   ;; for simplicity, we assume that an entid has at most one associated ident, and vice-versa.  See
   ;; http://docs.datomic.com/identity.html#idents.
   IDB
-  (query-context [db] (context/->Context (source/datoms-source db) nil nil))
+  (query-context [db] (context/->Context (datoms-source db) nil nil))
 
   (schema [db] (.-schema db))
 

src/datomish/query.cljc

@@ -116,8 +116,10 @@
   [q]
   (dp/parse-query q))
 
-(comment
+#_
 (def sql-quoting-style nil)
+
+#_
 (datomish.query/find->sql-string
   (datomish.query.context/->Context (datomish.query.source/datoms-source nil) nil nil)
   (datomish.query/parse
@@ -126,7 +128,6 @@
       [?t :db/txInstant ?timestampMicros]
       (not [(> ?t ?latest)]) ])
   {:latest 5})
-)
 
 #_
 (datomish.query/find->sql-string

src/datomish/query/clauses.cljc

@@ -114,7 +114,7 @@
 (defn- plain-symbol->sql-predicate-symbol [fn]
   (when-not (instance? PlainSymbol fn)
     (raise-str "Predicate functions must be named by plain symbols." fn))
-  (#{:> :< :=} (keyword (name (:symbol fn)))))
+  (#{:> :>= :< :<= := :!=} (keyword (name (:symbol fn)))))
 
 (defn apply-predicate-clause [cc predicate]
   (when-not (instance? Predicate predicate)

src/datomish/query/source.cljc

@@ -11,7 +11,7 @@
   #?(:clj
      (:import [datascript.parser Variable Constant Placeholder])))
 
-(defn- gensym-table-alias [table]
+(defn gensym-table-alias [table]
   (gensym (name table)))
 
 ;;;
@@ -93,15 +93,3 @@
 
   (constant-in-source [source constant]
     ((:constant-transform source) constant)))
-
-(defn datoms-source [db]
-  (map->DatomsSource
-    {:table :datoms
-     :fulltext-table :fulltext_values
-     :fulltext-view :all_datoms
-     :columns [:e :a :v :tx :added]
-     :attribute-transform transforms/attribute-transform-string
-     :constant-transform transforms/constant-transform-default
-     :table-alias gensym-table-alias
-     :make-constraints nil}))
-

test/datomish/api.cljc

@@ -37,3 +37,5 @@
 (def entid db/entid)
 
 (def ident db/ident)
+
+(def <q db/<?q)

test/datomish/query_test.cljc

@@ -0,0 +1,54 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+(ns datomish.query-test
+  #?(:cljs
+     (:require-macros
+      [datomish.pair-chan :refer [go-pair <?]]
+      [datomish.node-tempfile-macros :refer [with-tempfile]]
+      [cljs.core.async.macros :as a :refer [go]]))
+  (:require
+   [datomish.api :as d]
+   #?@(:clj [[datomish.pair-chan :refer [go-pair <?]]
+             [tempfile.core :refer [tempfile with-tempfile]]
+             [datomish.test-macros :refer [deftest-async]]
+             [clojure.test :as t :refer [is are deftest testing]]
+             [clojure.core.async :refer [go <! >!]]])
+   #?@(:cljs [[datomish.pair-chan]
+              [datomish.test-macros :refer-macros [deftest-async]]
+              [datomish.node-tempfile :refer [tempfile]]
+              [cljs.test :as t :refer-macros [is are deftest testing async]]
+              [cljs.core.async :as a :refer [<! >!]]]))
+  #?(:clj
+     (:import [clojure.lang ExceptionInfo]))
+  #?(:clj
+     (:import [datascript.db DB])))
+
+#?(:cljs
+   (def Throwable js/Error))
+
+(def test-schema
+  [{:db/id        (d/id-literal :test -1)
+    :db/ident     :x
+    :db/unique    :db.unique/identity
+    :db/valueType :db.type/integer
+    :db.install/_attribute :db.part/db}
+   ])
+
+(deftest-async test-q
+  (with-tempfile [t (tempfile)]
+    (let [conn      (<? (d/<connect t))
+          {tx0 :tx} (<? (d/<transact! conn test-schema))]
+      (try
+        (let [{tx1 :tx} (<? (d/<transact! conn [{:db/id 101 :x 505}]))]
+
+          (is (= (<? (d/<q (d/db conn)
+                           `[:find ?e ?a ?v ?tx :in $ :where
+                             [?e ?a ?v ?tx]
+                             [(> ?tx ~tx0)]
+                             [(!= ?a ~(d/entid (d/db conn) :db/txInstant))] ;; TODO: map ident->entid for values.
+                             ] {}))
+                 [[101 (d/entid (d/db conn) :x) 505 tx1]]))) ;; TODO: map entid->ident on egress.
+        (finally
+          (<? (d/<close conn)))))))